| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Innovations in High Entropy Alloys and Bulk Metallic Glasses: An SMD & FMD Symposium in Honor of Peter K. Liaw
|
| Presentation Title |
The Structure and Deformation Behaviors of Annealed Cu-Zr Metallic Glasses |
| Author(s) |
Cang Fan, Xingxing Yue, P. K. Liaw |
| On-Site Speaker (Planned) |
Cang Fan |
| Abstract Scope |
The structure evolution of annealing as-cast Cu-Zr metallic glasses (Cu36Zr64, Cu50Zr50, and Cu64Zr36) was investigated using the molecular dynamics simulations. The results show that the Cu64Zr36 metallic glass was partially crystallized under the annealing process. The crystallized structure is Cu2Zr Laves phase, which consists of Cu-centered <0 0 12 0> and Zr-centered <0 0 12 4> clusters. The simulations of the uniaxial compression tests were conducted on as-cast and annealed Cu64Zr36 at 300 K for investigating the initiation and propagation of their shear bands. The results showed that the shear band occurred only in the annealed sample. During deformation, the fraction of the Cu2Zr laves phase in the shear band dramatically decreases when the stress suddenly decreases. However, its fraction in the matrix changes slightly. The destruction of Cu-centered <0 0 12 0> and Zr-centered <0 0 12 4> clusters is accompanied by the annihilation of the Cu2Zr Laves phase. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |